How can you write the equation of a circle, given the center of the circle and the radius?

Which ordered pair is a solution to the system of linear equations? 2x + 3y= 6 –3x + 5y = 10

Lm is the midsegment of trapezoid abcd. if ab=46 and dc=125, what is lm?

Ijump serves waffles, pancakes or french toast for breakfast. in addition, there are 14 syrups from which to choose. the meal comes with the choice of chocolate chips, strawberries or no topping. how many different breakfasts are possible at ijump?